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M & M Sheet Cake Cookies Recipe with a Cake Mix

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If there was ever a cookie to enjoy this is it!  Not only are they easy to make {hello cake mix!} but they are also so tasty.  I feel like anything with M&M’s in it is instantly a crowd pleaser.  These chocolate cake mix cookies with mini M&M’s are made even more amazing with cooked chocolate frosting.  Make these simple cookies for dessert perfection, scroll down for the full recipe!

M & M Sheet Cake Cookies Recipe with a Cake Mix featured by top US cookies blogger, Practically Homemade

Cookies {as you already know} are my very favorite food group! 🙂

Texas Sheet Cake Cookies in particular are a cookie on a whole new level.  

The cooked frosting is totally epic.  I could {and maybe have been known to} eat it with a spoon.

It truly does add a layer of deliciousness that can’t be beat!  I promise that you are going to love these M&M Sheet Cake Cookies because they are totally awesome.

Thank you so much for stopping by! This M&M Sheet Cake Cookies recipe post contains affiliate links, I receive a small amount of compensation if you choose to purchase from my links (for example – as an Amazon Associate I earn from qualifying purchases). I only link to products that I know and love!

M & M Sheet Cake Cookies Recipe with a Cake Mix featured by top US cookies blogger, Practically Homemade

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How to make M&M Sheet Cake Cookies with a Cake Mix

Combine the cake mix, eggs and oil in a medium bowl.  Mix together using a hand held mixer {or by hand}.

Once you have a thick dough, add the mini M&M’s and mix with a spoon to evenly incorporate them into the dough.

M & M Sheet Cake Cookies Recipe with a Cake Mix featured by top US cookies blogger, Practically Homemade

Using a medium cookie scoop, scoop mounds of dough onto a silicone {or parchment} lined baking sheet.

M & M Sheet Cake Cookies Recipe with a Cake Mix featured by top US cookies blogger, Practically Homemade

Bake in a 350 degree oven for 9-11 minutes.  Remove from the oven and allow the cookies to cool on the baking sheet for at least 5 minutes.

M & M Sheet Cake Cookies Recipe with a Cake Mix featured by top US cookies blogger, Practically Homemade

Sheet Cake Cookie Frosting

To make the frosting, add the butter, milk and cocoa to a medium sized saucepan.

Cook over medium heat until the butter is melted.  Remove from the heat and add the powdered sugar.

Whisk until you have a smooth and silky frosting.

M & M Sheet Cake Cookies Recipe with a Cake Mix featured by top US cookies blogger, Practically Homemade

Take the frosting and spoon a heaping teaspoon full onto each of the cookies.

Spread it out with the back of a spoon and then sprinkle with a few remaining M&M’s.

M & M Sheet Cake Cookies Recipe with a Cake Mix featured by top US cookies blogger, Practically Homemade

Allow the frosting to set up before stacking the cookies on top of each other.  This takes about 30 minutes.

If you can’t wait that long then eat one {or three} while you wait.

M & M Sheet Cake Cookies Recipe with a Cake Mix featured by top US cookies blogger, Practically Homemade

CAKE MIX COOKIE BAKING TIPS

  • Use a whisk to break up any lumps in the cake mix before adding the other ingredients.
  • Whisk the two eggs together before adding them to the cake mix.  This is especially important when you are mixing by hand. 
  • Always use a cookie scoop when making cookies because when they are all the same size they bake evenly {see my other cake mix cookie baking tips here}.
  • Do not over bake.  It is so important to remove the cookies before they are totally set.  The difference between a perfectly baked cookie and an over baked cookie is only a minute or two.
  • Allow the cookies to cool on the baking sheet for at least 5 minutes.  The heat from the baking sheet will allow the cookies to continue baking slightly and set up just right.

M & M Sheet Cake Cookies Recipe with a Cake Mix featured by top US cookies blogger, Practically Homemade

Do you love cake mix cookies?  Try these recipes…
M & M Sheet Cake Cookies Recipe with a Cake Mix featured by top US cookies blogger, Practically Homemade

M&M Sheet Cake Cookies with a Cake Mix

Cake Mix Sheet Cake Cookies are made even better when M&M candies are added.
Course: Dessert
Prep Time: 5 minutes
Cook Time: 40 minutes
Total Time: 45 minutes
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Ingredients

Cookie

  • 1-15.25 oz. box chocolate cake mix {I like chocolate fudge}
  • 2 eggs {whisked}
  • cup vegetable oil
  • cup mini M&M candies

Frosting

  • ½ cup butter
  • 2 tbsp cocoa
  • 3 tbsp milk {I used 1%}
  • 2 ½ cups powdered sugar

Topping

  • ¼ cup mini M&M candies

Instructions

Cookies

  • Preheat oven to 350 degrees.
  • Combine cookie ingredients in large bowl and mix until completely incorporated.  I like to use a hand held mixer but stirring the ingredients by hand works too. NOTE:  Dough will be thick.
  • Add mini M&M's to the dough and stir in with spoon until they are evenly incorporated.
  • Using a medium sized cookie scoop {or heaping tablespoon}, scoop cookies onto a silicone {or parchment} lined cookie sheet.
  • Bake for 9-11 minutes, remove from oven and let cool on cookie sheet for at least 5 minutes before moving them to a cooling rack.  Repeat until all of the dough is baked.

Frosting

  • Combine the butter, cocoa and milk in a medium saucepan over medium heat and whisk until the butter has melted.  Remove from the heat, add powdered sugar and whisk until smooth.
  • Spoon a heaping teaspoon of frosting over each of the cookies.  Use the back of the spoon to spread the frosting out. Sprinkle the top of each cookie with a few additional mini M&M candies before frosting has set up. NOTE: Working on one or two cookies at a time works best.
  • Let frosting set and serve.  Keep your sheet cake cookies in an air tight container at room temperature for up to 3 days.
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